Give new and potential customers a reason to look at your brand more than once when you add it to this LED Light Up Coaster! Not only does it change colors while in use, it also features a metal bottle opener to keep their drinks flowing all night long. Button cell batteries are included and the coaster has skid resistant backing that's easy on all surfaces. Just add your company's name and logo to create a marketing tool that can be used in bars, restaurants, homes and offices alike!